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Employee Incentive Plans (2007 Stock Incentive Plan, ROI Summary) (Details) - 2007 Stock Incentive Plan (Shares)	3 Months Ended
	Mar. 31, 2020 shares
Beginning Balance	5,127,915	[1]
Shares Cancelled	(14,325)
Shares Distributed	(311)
Ending Balance	5,113,279
[1] Stock Incentive Plan number of granted restricted stock units related to 2019 was adjusted by 343 additional restricted stock units during the three months ended March 31, 2020.

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- Definition

Shares granted, net of shares distributed and forfeited.

+ References

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+ Details

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- Definition

Total shares distributed during the period.

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No definition available.

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- Definition

Shares cancelled during the period.

+ References

No definition available.

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- Details

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